Patents by Inventor John P. Sharber

John P. Sharber has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for electrofishing
    Patent number: 5327668
    Abstract: To minimize injury during electrofishing while inducing a high degree of electrotaxis, a packet of DC pulses having sharp leading edges and preferably an exponential or square decay are transmitted under water between an anode electrode and a cathode electrode several times each second to stimulate contraction of the red muscle tissues and bring about electrotaxis without inducing epileptic seizure of the white muscle tissues of fish and thereby avoiding injury to the fish. The power level of transmission is reduced between the packets.
    Type: Grant
    Filed: August 31, 1993
    Date of Patent: July 12, 1994
    Assignee: Coffelt Manufacturing, Inc.
    Inventors: Norman G. Sharber, John P. Sharber
  • Electrofishing apparatus and method
    Patent number: 5311694
    Abstract: To minimize injury during electrofishing while inducing a high degree of electrotaxis, a packet of DC pulses having sharp leading edges and preferably an exponential or square decay are transmitted under water between an anode electrode and a cathode electrode several times each second to stimulate contraction of the red muscle tissues and bring about electrotaxis without inducing epileptic seizure of the white muscle tissues of fish and thereby avoiding injury to the fish.
    Type: Grant
    Filed: May 6, 1993
    Date of Patent: May 17, 1994
    Assignee: Coffelt Manufacturing, Inc.
    Inventors: Norman G. Sharber, John P. Sharber
  • Electrofishing apparatus and method
    Patent number: 5270912
    Abstract: To minimize injury during electrofishing while inducing a high degree of electrotaxis, a packet of DC pulses having sharp leading edges and preferably an exponential or square decay are transmitted under water between an anode electrode and a cathode electrode several times each second to stimulate contraction of the red muscle tissues and bring about electrotaxis without inducing epileptic seizure of the white muscle tissues of fish and thereby avoiding injury to the fish.
    Type: Grant
    Filed: April 30, 1992
    Date of Patent: December 14, 1993
    Assignee: Coffelt Manufacturing, Inc.
    Inventors: Norman G. Sharber, John P. Sharber
  • Electrofishing apparatus and method
    Patent number: 5233782
    Abstract: To minimize injury during electrofishing while inducing a high degree of electrotaxis, a packet of DC pulses having sharp leading edges and preferably an exponential or square decay are transmitted under water between an anode electrode and a cathode electrode several times each second to stimulate contraction of the red muscle tissues and bring about electrotaxis without inducing epileptic seizure of the white muscle tissues of fish and thereby avoiding injury to the fish.
    Type: Grant
    Filed: April 30, 1992
    Date of Patent: August 10, 1993
    Assignee: Coffelt Manufacturing, Inc.
    Inventors: Norman G. Sharber, John P. Sharber
  • Electrofishing apparatus and method
    Patent number: 5111379
    Abstract: To minimize injury during electrofishing while inducing a high degree of electrotaxis, a packet of DC pulses having sharp leading edges and preferably an exponential or square decay are transmitted under water between an anode electrode and a cathode electrode several times each second to stimulate contraction of the red muscle tissues and bring about electrotaxis without inducing epileptic seizure of the white muscle tissues of fish and thereby avoiding injury to the fish.
    Type: Grant
    Filed: December 6, 1989
    Date of Patent: May 5, 1992
    Assignee: Coffelt Manufacturing, Inc.
    Inventors: Norman G. Sharber, John P. Sharber